First Of All Please Follow This
PEMDAS
P: ()
E:^
M:x
D:/
A:+
S:-
6 x (15 - 7) - 4
6 x (8) - 4
48 - 4
44
Answer: C
This is how the whole equation goes:
1/x^-a = x^a
So, 1/5^-2 is the same as 5^2, which is 25.
Answer:
D
Step-by-step explanation:
To find the rate of increase all you have to do is take one of the data sets to see that every two months its charge time increases by 15 minutes or 7.5 minutes every month.
Answer:
After multiplication number will be 
Step-by-step explanation:
We have given numbers which has to multiply using scientific notation
That are 
We have to multiply the above number using scientific notation
We know that when two number are multiplied then there exponent power is being added
So when we multiply
there power will be added and after multiplication number will be 
Answer:
1469.5
Step-by-step explanation:
when rounding to whichever place always look at the number to the right of the spot you are rounding to
since "2" is less than 5 we ignore all the numbers after the tenths place
hope this helps!